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<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2012 The Netty Project</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * The Netty Project licenses this file to you under the Apache License,</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * version 2.0 (the "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * with the License. You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.handler.codec.http;
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> java.util.Queue;
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.ConcurrentLinkedQueue;
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.atomic.AtomicLong;
<a class="jxr_linenumber" name="21" href="#21">21</a>  
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.buffer.ChannelBuffer;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.Channel;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelDownstreamHandler;
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelEvent;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelHandlerContext;
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelStateEvent;
<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelUpstreamHandler;
<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.PrematureChannelClosureException;
<a class="jxr_linenumber" name="30" href="#30">30</a>  
<a class="jxr_linenumber" name="31" href="#31">31</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> * A combination of {@link HttpRequestEncoder} and {@link HttpResponseDecoder}</em>
<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * which enables easier client side HTTP implementation. {@link HttpClientCodec}</em>
<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> * provides additional state management for &lt;tt&gt;HEAD&lt;/tt&gt; and &lt;tt&gt;CONNECT&lt;/tt&gt;</em>
<a class="jxr_linenumber" name="35" href="#35">35</a>  <em class="jxr_javadoccomment"> * requests, which {@link HttpResponseDecoder} lacks.  Please refer to</em>
<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_javadoccomment"> * {@link HttpResponseDecoder} to learn what additional state management needs</em>
<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_javadoccomment"> * to be done for &lt;tt&gt;HEAD&lt;/tt&gt; and &lt;tt&gt;CONNECT&lt;/tt&gt; and why</em>
<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment"> * {@link HttpResponseDecoder} can not handle it by itself.</em>
<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> * If the {@link Channel} gets closed and there are requests missing for a response</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> * a {@link PrematureChannelClosureException} is thrown.</em>
<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * @see HttpServerCodec</em>
<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * @apiviz.has org.jboss.netty.handler.codec.http.HttpResponseDecoder</em>
<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * @apiviz.has org.jboss.netty.handler.codec.http.HttpRequestEncoder</em>
<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpClientCodec.html">HttpClientCodec</a> <strong class="jxr_keyword">implements</strong> ChannelUpstreamHandler,
<a class="jxr_linenumber" name="49" href="#49">49</a>          <a href="../../../../../../org/jboss/netty/channel/ChannelDownstreamHandler.html">ChannelDownstreamHandler</a> {
<a class="jxr_linenumber" name="50" href="#50">50</a>  
<a class="jxr_linenumber" name="51" href="#51">51</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> A queue that is used for correlating a request and a response. */</em>
<a class="jxr_linenumber" name="52" href="#52">52</a>      <strong class="jxr_keyword">final</strong> Queue&lt;HttpMethod&gt; queue = <strong class="jxr_keyword">new</strong> ConcurrentLinkedQueue&lt;HttpMethod&gt;();
<a class="jxr_linenumber" name="53" href="#53">53</a>  
<a class="jxr_linenumber" name="54" href="#54">54</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> If true, decoding stops (i.e. pass-through) */</em>
<a class="jxr_linenumber" name="55" href="#55">55</a>      <strong class="jxr_keyword">volatile</strong> <strong class="jxr_keyword">boolean</strong> done;
<a class="jxr_linenumber" name="56" href="#56">56</a>  
<a class="jxr_linenumber" name="57" href="#57">57</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpRequestEncoder.html">HttpRequestEncoder</a> encoder = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpClientCodec.html">Encoder</a>();
<a class="jxr_linenumber" name="58" href="#58">58</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpResponseDecoder.html">HttpResponseDecoder</a> decoder;
<a class="jxr_linenumber" name="59" href="#59">59</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> AtomicLong requestResponseCounter = <strong class="jxr_keyword">new</strong> AtomicLong(0);
<a class="jxr_linenumber" name="60" href="#60">60</a>  
<a class="jxr_linenumber" name="61" href="#61">61</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> failOnMissingResponse;
<a class="jxr_linenumber" name="62" href="#62">62</a>  
<a class="jxr_linenumber" name="63" href="#63">63</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment">     * Creates a new instance with the default decoder options</em>
<a class="jxr_linenumber" name="65" href="#65">65</a>  <em class="jxr_javadoccomment">     * ({@code maxInitialLineLength (4096}}, {@code maxHeaderSize (8192)}, and</em>
<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment">     * {@code maxChunkSize (8192)}).</em>
<a class="jxr_linenumber" name="67" href="#67">67</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="69" href="#69">69</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpClientCodec.html">HttpClientCodec</a>() {
<a class="jxr_linenumber" name="70" href="#70">70</a>          <strong class="jxr_keyword">this</strong>(4096, 8192, 8192, false);
<a class="jxr_linenumber" name="71" href="#71">71</a>      }
<a class="jxr_linenumber" name="72" href="#72">72</a>  
<a class="jxr_linenumber" name="73" href="#73">73</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment">     * Creates a new instance with the specified decoder options.</em>
<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="76" href="#76">76</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpClientCodec.html">HttpClientCodec</a>(
<a class="jxr_linenumber" name="77" href="#77">77</a>              <strong class="jxr_keyword">int</strong> maxInitialLineLength, <strong class="jxr_keyword">int</strong> maxHeaderSize, <strong class="jxr_keyword">int</strong> maxChunkSize) {
<a class="jxr_linenumber" name="78" href="#78">78</a>          <strong class="jxr_keyword">this</strong>(maxInitialLineLength, maxHeaderSize, maxChunkSize, false);
<a class="jxr_linenumber" name="79" href="#79">79</a>      }
<a class="jxr_linenumber" name="80" href="#80">80</a>  
<a class="jxr_linenumber" name="81" href="#81">81</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="82" href="#82">82</a>  <em class="jxr_javadoccomment">     * Creates a new instance with the specified decoder options.</em>
<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="84" href="#84">84</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpClientCodec.html">HttpClientCodec</a>(
<a class="jxr_linenumber" name="85" href="#85">85</a>              <strong class="jxr_keyword">int</strong> maxInitialLineLength, <strong class="jxr_keyword">int</strong> maxHeaderSize, <strong class="jxr_keyword">int</strong> maxChunkSize, <strong class="jxr_keyword">boolean</strong> failOnMissingResponse) {
<a class="jxr_linenumber" name="86" href="#86">86</a>          decoder = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpClientCodec.html">Decoder</a>(maxInitialLineLength, maxHeaderSize, maxChunkSize);
<a class="jxr_linenumber" name="87" href="#87">87</a>          <strong class="jxr_keyword">this</strong>.failOnMissingResponse = failOnMissingResponse;
<a class="jxr_linenumber" name="88" href="#88">88</a>      }
<a class="jxr_linenumber" name="89" href="#89">89</a>  
<a class="jxr_linenumber" name="90" href="#90">90</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> handleUpstream(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx, <a href="../../../../../../org/jboss/netty/channel/ChannelEvent.html">ChannelEvent</a> e)
<a class="jxr_linenumber" name="91" href="#91">91</a>              <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="92" href="#92">92</a>          decoder.handleUpstream(ctx, e);
<a class="jxr_linenumber" name="93" href="#93">93</a>      }
<a class="jxr_linenumber" name="94" href="#94">94</a>  
<a class="jxr_linenumber" name="95" href="#95">95</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> handleDownstream(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx, <a href="../../../../../../org/jboss/netty/channel/ChannelEvent.html">ChannelEvent</a> e)
<a class="jxr_linenumber" name="96" href="#96">96</a>              <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="97" href="#97">97</a>          encoder.handleDownstream(ctx, e);
<a class="jxr_linenumber" name="98" href="#98">98</a>      }
<a class="jxr_linenumber" name="99" href="#99">99</a>  
<a class="jxr_linenumber" name="100" href="#100">100</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpClientCodec.html">Encoder</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpRequestEncoder.html">HttpRequestEncoder</a> {
<a class="jxr_linenumber" name="101" href="#101">101</a> 
<a class="jxr_linenumber" name="102" href="#102">102</a>         <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpClientCodec.html">Encoder</a>() {
<a class="jxr_linenumber" name="103" href="#103">103</a>         }
<a class="jxr_linenumber" name="104" href="#104">104</a> 
<a class="jxr_linenumber" name="105" href="#105">105</a>         @Override
<a class="jxr_linenumber" name="106" href="#106">106</a>         <strong class="jxr_keyword">protected</strong> Object encode(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx, <a href="../../../../../../org/jboss/netty/channel/Channel.html">Channel</a> channel,
<a class="jxr_linenumber" name="107" href="#107">107</a>                 Object msg) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="108" href="#108">108</a>             <strong class="jxr_keyword">if</strong> (msg instanceof HttpRequest &amp;&amp; !done) {
<a class="jxr_linenumber" name="109" href="#109">109</a>                 queue.offer(((HttpRequest) msg).getMethod());
<a class="jxr_linenumber" name="110" href="#110">110</a>             }
<a class="jxr_linenumber" name="111" href="#111">111</a> 
<a class="jxr_linenumber" name="112" href="#112">112</a>             Object obj =  <strong class="jxr_keyword">super</strong>.encode(ctx, channel, msg);
<a class="jxr_linenumber" name="113" href="#113">113</a> 
<a class="jxr_linenumber" name="114" href="#114">114</a>             <strong class="jxr_keyword">if</strong> (failOnMissingResponse) {
<a class="jxr_linenumber" name="115" href="#115">115</a>                 <em class="jxr_comment">// check if the request is chunked if so do not increment</em>
<a class="jxr_linenumber" name="116" href="#116">116</a>                 <strong class="jxr_keyword">if</strong> (msg instanceof HttpRequest &amp;&amp; !((HttpRequest) msg).isChunked()) {
<a class="jxr_linenumber" name="117" href="#117">117</a>                     requestResponseCounter.incrementAndGet();
<a class="jxr_linenumber" name="118" href="#118">118</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (msg instanceof HttpChunk &amp;&amp; ((HttpChunk) msg).isLast()) {
<a class="jxr_linenumber" name="119" href="#119">119</a>                     <em class="jxr_comment">// increment as its the last chunk</em>
<a class="jxr_linenumber" name="120" href="#120">120</a>                     requestResponseCounter.incrementAndGet();
<a class="jxr_linenumber" name="121" href="#121">121</a>                 }
<a class="jxr_linenumber" name="122" href="#122">122</a>             }
<a class="jxr_linenumber" name="123" href="#123">123</a>             <strong class="jxr_keyword">return</strong> obj;
<a class="jxr_linenumber" name="124" href="#124">124</a>         }
<a class="jxr_linenumber" name="125" href="#125">125</a>     }
<a class="jxr_linenumber" name="126" href="#126">126</a> 
<a class="jxr_linenumber" name="127" href="#127">127</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpClientCodec.html">Decoder</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpResponseDecoder.html">HttpResponseDecoder</a> {
<a class="jxr_linenumber" name="128" href="#128">128</a> 
<a class="jxr_linenumber" name="129" href="#129">129</a>         <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpClientCodec.html">Decoder</a>(<strong class="jxr_keyword">int</strong> maxInitialLineLength, <strong class="jxr_keyword">int</strong> maxHeaderSize, <strong class="jxr_keyword">int</strong> maxChunkSize) {
<a class="jxr_linenumber" name="130" href="#130">130</a>             <strong class="jxr_keyword">super</strong>(maxInitialLineLength, maxHeaderSize, maxChunkSize);
<a class="jxr_linenumber" name="131" href="#131">131</a>         }
<a class="jxr_linenumber" name="132" href="#132">132</a> 
<a class="jxr_linenumber" name="133" href="#133">133</a>         @Override
<a class="jxr_linenumber" name="134" href="#134">134</a>         <strong class="jxr_keyword">protected</strong> Object decode(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx, <a href="../../../../../../org/jboss/netty/channel/Channel.html">Channel</a> channel,
<a class="jxr_linenumber" name="135" href="#135">135</a>                 <a href="../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a> buffer, <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpMessageDecoder.html">State</a> state) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="136" href="#136">136</a>             <strong class="jxr_keyword">if</strong> (done) {
<a class="jxr_linenumber" name="137" href="#137">137</a>                 <strong class="jxr_keyword">int</strong> readable = actualReadableBytes();
<a class="jxr_linenumber" name="138" href="#138">138</a>                 <strong class="jxr_keyword">if</strong> (readable == 0) {
<a class="jxr_linenumber" name="139" href="#139">139</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="140" href="#140">140</a>                 }
<a class="jxr_linenumber" name="141" href="#141">141</a>                 <strong class="jxr_keyword">return</strong> buffer.readBytes(readable);
<a class="jxr_linenumber" name="142" href="#142">142</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="143" href="#143">143</a>                 Object msg = <strong class="jxr_keyword">super</strong>.decode(ctx, channel, buffer, state);
<a class="jxr_linenumber" name="144" href="#144">144</a>                 <strong class="jxr_keyword">if</strong> (failOnMissingResponse) {
<a class="jxr_linenumber" name="145" href="#145">145</a>                     decrement(msg);
<a class="jxr_linenumber" name="146" href="#146">146</a>                 }
<a class="jxr_linenumber" name="147" href="#147">147</a>                 <strong class="jxr_keyword">return</strong> msg;
<a class="jxr_linenumber" name="148" href="#148">148</a>             }
<a class="jxr_linenumber" name="149" href="#149">149</a>         }
<a class="jxr_linenumber" name="150" href="#150">150</a> 
<a class="jxr_linenumber" name="151" href="#151">151</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> decrement(Object msg) {
<a class="jxr_linenumber" name="152" href="#152">152</a>             <strong class="jxr_keyword">if</strong> (msg == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="153" href="#153">153</a>                 <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="154" href="#154">154</a>             }
<a class="jxr_linenumber" name="155" href="#155">155</a> 
<a class="jxr_linenumber" name="156" href="#156">156</a>             <em class="jxr_comment">// check if its a HttpMessage and its not chunked</em>
<a class="jxr_linenumber" name="157" href="#157">157</a>             <strong class="jxr_keyword">if</strong> (msg instanceof HttpMessage &amp;&amp; !((HttpMessage) msg).isChunked()) {
<a class="jxr_linenumber" name="158" href="#158">158</a>                 requestResponseCounter.decrementAndGet();
<a class="jxr_linenumber" name="159" href="#159">159</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (msg instanceof HttpChunk &amp;&amp; ((HttpChunk) msg).isLast()) {
<a class="jxr_linenumber" name="160" href="#160">160</a>                 requestResponseCounter.decrementAndGet();
<a class="jxr_linenumber" name="161" href="#161">161</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (msg instanceof Object[]) {
<a class="jxr_linenumber" name="162" href="#162">162</a>                 <em class="jxr_comment">// we just decrement it here as we only use this if the end of the chunk is reached</em>
<a class="jxr_linenumber" name="163" href="#163">163</a>                 <em class="jxr_comment">// It would be more safe to check all the objects in the array but would also be slower</em>
<a class="jxr_linenumber" name="164" href="#164">164</a>                 requestResponseCounter.decrementAndGet();
<a class="jxr_linenumber" name="165" href="#165">165</a>             }
<a class="jxr_linenumber" name="166" href="#166">166</a>         }
<a class="jxr_linenumber" name="167" href="#167">167</a>         @Override
<a class="jxr_linenumber" name="168" href="#168">168</a>         <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> isContentAlwaysEmpty(<a href="../../../../../../org/jboss/netty/handler/codec/http/HttpMessage.html">HttpMessage</a> msg) {
<a class="jxr_linenumber" name="169" href="#169">169</a>             <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> statusCode = ((HttpResponse) msg).getStatus().getCode();
<a class="jxr_linenumber" name="170" href="#170">170</a>             <strong class="jxr_keyword">if</strong> (statusCode == 100) {
<a class="jxr_linenumber" name="171" href="#171">171</a>                 <em class="jxr_comment">// 100-continue response should be excluded from paired comparison.</em>
<a class="jxr_linenumber" name="172" href="#172">172</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="173" href="#173">173</a>             }
<a class="jxr_linenumber" name="174" href="#174">174</a> 
<a class="jxr_linenumber" name="175" href="#175">175</a>             <em class="jxr_comment">// Get the method of the HTTP request that corresponds to the</em>
<a class="jxr_linenumber" name="176" href="#176">176</a>             <em class="jxr_comment">// current response.</em>
<a class="jxr_linenumber" name="177" href="#177">177</a>             <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpMethod.html">HttpMethod</a> method = queue.poll();
<a class="jxr_linenumber" name="178" href="#178">178</a> 
<a class="jxr_linenumber" name="179" href="#179">179</a>             <strong class="jxr_keyword">char</strong> firstChar = method.getName().charAt(0);
<a class="jxr_linenumber" name="180" href="#180">180</a>             <strong class="jxr_keyword">switch</strong> (firstChar) {
<a class="jxr_linenumber" name="181" href="#181">181</a>             <strong class="jxr_keyword">case</strong> 'H':
<a class="jxr_linenumber" name="182" href="#182">182</a>                 <em class="jxr_comment">// According to 4.3, RFC2616:</em>
<a class="jxr_linenumber" name="183" href="#183">183</a>                 <em class="jxr_comment">// All responses to the HEAD request method MUST NOT include a</em>
<a class="jxr_linenumber" name="184" href="#184">184</a>                 <em class="jxr_comment">// message-body, even though the presence of entity-header fields</em>
<a class="jxr_linenumber" name="185" href="#185">185</a>                 <em class="jxr_comment">// might lead one to believe they do.</em>
<a class="jxr_linenumber" name="186" href="#186">186</a>                 <strong class="jxr_keyword">if</strong> (HttpMethod.HEAD.equals(method)) {
<a class="jxr_linenumber" name="187" href="#187">187</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="188" href="#188">188</a> 
<a class="jxr_linenumber" name="189" href="#189">189</a>                     <em class="jxr_comment">// The following code was inserted to work around the servers</em>
<a class="jxr_linenumber" name="190" href="#190">190</a>                     <em class="jxr_comment">// that behave incorrectly.  It has been commented out</em>
<a class="jxr_linenumber" name="191" href="#191">191</a>                     <em class="jxr_comment">// because it does not work with well behaving servers.</em>
<a class="jxr_linenumber" name="192" href="#192">192</a>                     <em class="jxr_comment">// Please note, even if the 'Transfer-Encoding: chunked'</em>
<a class="jxr_linenumber" name="193" href="#193">193</a>                     <em class="jxr_comment">// header exists in the HEAD response, the response should</em>
<a class="jxr_linenumber" name="194" href="#194">194</a>                     <em class="jxr_comment">// have absolutely no content.</em>
<a class="jxr_linenumber" name="195" href="#195">195</a>                     <em class="jxr_comment">//</em>
<a class="jxr_linenumber" name="196" href="#196">196</a>                     <em class="jxr_comment">//// Interesting edge case:</em>
<a class="jxr_linenumber" name="197" href="#197">197</a>                     <em class="jxr_comment">//// Some poorly implemented servers will send a zero-byte</em>
<a class="jxr_linenumber" name="198" href="#198">198</a>                     <em class="jxr_comment">//// chunk if Transfer-Encoding of the response is 'chunked'.</em>
<a class="jxr_linenumber" name="199" href="#199">199</a>                     <em class="jxr_comment">////</em>
<a class="jxr_linenumber" name="200" href="#200">200</a>                     <em class="jxr_comment">//// return !msg.isChunked();</em>
<a class="jxr_linenumber" name="201" href="#201">201</a>                 }
<a class="jxr_linenumber" name="202" href="#202">202</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="203" href="#203">203</a>             <strong class="jxr_keyword">case</strong> 'C':
<a class="jxr_linenumber" name="204" href="#204">204</a>                 <em class="jxr_comment">// Successful CONNECT request results in a response with empty body.</em>
<a class="jxr_linenumber" name="205" href="#205">205</a>                 <strong class="jxr_keyword">if</strong> (statusCode == 200) {
<a class="jxr_linenumber" name="206" href="#206">206</a>                     <strong class="jxr_keyword">if</strong> (HttpMethod.CONNECT.equals(method)) {
<a class="jxr_linenumber" name="207" href="#207">207</a>                         <em class="jxr_comment">// Proxy connection established - Not HTTP anymore.</em>
<a class="jxr_linenumber" name="208" href="#208">208</a>                         done = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="209" href="#209">209</a>                         queue.clear();
<a class="jxr_linenumber" name="210" href="#210">210</a>                         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="211" href="#211">211</a>                     }
<a class="jxr_linenumber" name="212" href="#212">212</a>                 }
<a class="jxr_linenumber" name="213" href="#213">213</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="214" href="#214">214</a>             }
<a class="jxr_linenumber" name="215" href="#215">215</a> 
<a class="jxr_linenumber" name="216" href="#216">216</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">super</strong>.isContentAlwaysEmpty(msg);
<a class="jxr_linenumber" name="217" href="#217">217</a>         }
<a class="jxr_linenumber" name="218" href="#218">218</a> 
<a class="jxr_linenumber" name="219" href="#219">219</a>         @Override
<a class="jxr_linenumber" name="220" href="#220">220</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> channelClosed(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx, <a href="../../../../../../org/jboss/netty/channel/ChannelStateEvent.html">ChannelStateEvent</a> e) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="221" href="#221">221</a>             <strong class="jxr_keyword">super</strong>.channelClosed(ctx, e);
<a class="jxr_linenumber" name="222" href="#222">222</a>             <strong class="jxr_keyword">if</strong> (failOnMissingResponse) {
<a class="jxr_linenumber" name="223" href="#223">223</a>                 <strong class="jxr_keyword">long</strong> missingResponses = requestResponseCounter.get();
<a class="jxr_linenumber" name="224" href="#224">224</a>                 <strong class="jxr_keyword">if</strong> (missingResponses &gt; 0) {
<a class="jxr_linenumber" name="225" href="#225">225</a>                     <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/handler/codec/PrematureChannelClosureException.html">PrematureChannelClosureException</a>(
<a class="jxr_linenumber" name="226" href="#226">226</a>                             <span class="jxr_string">"Channel closed but still missing "</span> + missingResponses + <span class="jxr_string">" response(s)"</span>);
<a class="jxr_linenumber" name="227" href="#227">227</a>                 }
<a class="jxr_linenumber" name="228" href="#228">228</a>             }
<a class="jxr_linenumber" name="229" href="#229">229</a>         }
<a class="jxr_linenumber" name="230" href="#230">230</a>     }
<a class="jxr_linenumber" name="231" href="#231">231</a> }
</pre>
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